English noun: synapsid | |||
| 1. | synapsid (animal) extinct reptile having a single pair of lateral temporal openings in the skull | ||
| Synonyms | synapsid reptile | ||
| Broader (hypernym) | reptile, reptilian | ||
| Narrower (hyponym) | dimetrodon, edaphosaurus, ictodosaur, pelycosaur, protomammal, therapsid | ||